Cut-off device for valve-bag-filling machines



April 1, 1931. w. R. PETERSON 1,801,454

CUT-OFF DEVICE FOR VALVE BAG FILLING MACHINES Filed Oct. 29, 1929 2 Sheets-Sheet 1 VVz'lZz'am Rpzelers on April 21, 1931- w. R. PETERSON 1,801,454

CUT-OFF DEVICE FOR VALVE BAG FILLING MACHINES Filed Oct. 29, 1929 2 Sheets-Sheet 2 gwuanfoc WU! z'am RPel erson Patented Apr. 21, 1931 UNITED STATES PATENT OFFICE WILLIAM B. PETERSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO 81. BEGIS PAPER COI- PANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK CUT-OFF DEVICE FOR VALVE-BAG-FILLING MACHINES Application filed October 29, 1929. Serial No. 403,298.

This invention relates to a cut off for a valve bag filling machine and more specifically to a gate for closing the discharge orifice of such a machine and means for opcrating the gate by a weighin device u on which the bag may be mounted. One ob ect of the invention is to provide a simple and efiicient mechanism by which the discharge orifice may be automatically closed in re- 1 sponse to a weighing device upon which a bag is mounted. Other objects and details of the invention will appear as the description proceeds.

In the accompan -n drawings forming a part of this speci cation, Fig. 1 is a diagrammatic side view of one embodiment of the invention with parts in section and parts broken awa Fig. 2 is a partial front elevation of t e same device with parts removed; Fig. 3 is a front elevation of the gate and its operating parts when the gate is in closed position; ig. 4 is a front elevation similar to Fi 3, but showing the gate in open position; %ig. 5 is 'a front elevation 26 of the manually operable means for opening the gate; Fig. 6 is a front elevation of the tri device which operates to close the gate.

iii the construction shown, there is provided a casing 10 for material which is to be fed into a bag.- The material is discharged from the casing by a propeller 11 through a discharge orifice 12. A suitable frame 13 is mounted in front of the device and carries a spout 14 normally in registry with orifice 12 and adapted to enter the valve of a bag 15. A support 16 may be provided for the bottom of the bag. The bag support rests upon one end of a scale beam 17 fulcrumed at 18.

Discharge orifice 12 is controlled by a disk 19 on the end of a shaft 20, the disk being provided with openings 21 adapted to register in succession with orifice 12.

Beneath casing 10 there are downwardly projecting bearings 22 for shaft 20. Adjacent the front bearing there is a sleeve 23 mounted loosely upon shaft 20. Sleeve 23 is provided with an arm 24 at the end of which there is a handle 25. A pawl 26 mounted on the sleeve is adapted to engage with a ,ratchet wheel 27 fixed onshaft 20. Projecting downwardly from bearings 22 there'are arms 28 carrying a pin 29 on which there is mounted a sleeve 29. Projecting downward from sleeve 23 there is an arm 30 carrying a pin 31 which works in a slot 32 in an arm 33 projecting upward from sleeve 29'. Projecting to the ri ht'from sleeve 29, as viewed in front elevation, there is an arm 34 which carries u on its end an anti-friction roller 35. (See ig. 1.)

On the other side of ratchet wheel 27 from sleeve 23 there is a sleeve 36 mounted loosely upon shaft 20. Sleeve 36 is provided with an arm 37 projecting to the left, as viewed in front elevation, and a spring 38 connected to the end of arm 37 extends upward to a suitable fixed point on the frame and normally raises the arm. Arm 37 also carries a pawl 39 in position to engage ratchet wheel 27. Sleeve 36 is provi ed also with anarm 40 which extends to the right, as viewed in front elevation. At the end of arm 40 there is a wear plate 41 normally engagin the notched end of a downwardly exten ing arm 42 of a bell crank lever fulcrumed at 43 upon the frame. A horizontal arm 44 of the bell crank lever is connected by a rod 45 with scale beam 17. Sprin 46 holds arm 44 in raised osition until orcibly lowered by action 0 the scale beam.

A spring 47 attached to handle 25 normally holds the handle in raised position.

Assuming that the parts are in the position in which they are shown in Figs. 1 and 2, the operation of the device is as follows.

As will be seen from Fig. 2, an orifice 21 through disk 19 is in registry with discharge orifice 12 so that material may be discharged by the propeller into the'bag. When the bag is sufiiciently filled to lower scale beam 17, rod 45 is lowered therewith and rocks lever arms 44 and 42 so as to release arm 40, whereupon spring 38 raises arm 37 and pawl 39 therewith, swinging arm 40 to the position in which it is shown in Fig. 3. As will be readily seen from Fig. 3, this will move disk 19 so that opening 21 is out of registry with'opening 12 and thereby cut off the flow of material into the bag. The bag 'is thendischarged and the beam returns to its normal position and spring 46 swings .arms 44 and 42 back to theirlocking osii it is shown in Figs. 2 and 6. The beveled end 48 of arm 40 encounters the beveled end 49 of arm 42'and forces spring 46 to yield sufliciently to allow the parts to arrive at locking position. Thereafter, handle 25 is released and is returned by spring 47 to the normal position in which it is shown in Figs. 1 to 3 and 5, thus returning the parts to the position in which they are shown in Figs. 1 and 2, in which they remain until the bag is filled, whereupon the operation is repeated.

Various modifications may be made within the scope of the appended claims.

What is claimed is:

1. A filling device comprising a casing having a discharge orifice, means within the casing for discharging material through said orifice, a spout adapted to register with said orifice and direct material into a receptacle, a weighing device for the receptacle, a disk gate having a plurality of holes therein adapted to register in succession with said orifice, and mechanism rendered operative by the weighing device for turning the disk to move a solid portion thereof into registry with said orifice.

2. A filling device comprising a casing having a discharge orifice, means within the casing for discharging material through said orifice, a spout adapted to register with said orifice and direct material into a receptacle, a weighing device for the receptacle, a disk gate having a plurality of holes therein adapted to register in succession with said orifice, mechanism rendered operative by the weighing device for turning the disk to move 'a solid portion thereof into registry with said orifice, and hand-operated means to move the disk to register one of the openings with said orifice.

3. In filling apparatus, a casing having a discharge orifice, means within the casing for discharging material through said orifice, a spout adapted to register with said orifice and discharge material into the receptacle, a disk having a series of holes therethrough adapted to register in succession with said orifice and having solid for discharging material through said orifice, a spout adapted to register with said orifice and discharge material into the receptacle, a disk having a series of holes therethrough adapted to register in succession with said orifice and having solid spaces between successive holes wide enough to close said orifice, a ratchet wheel attached to said disk, a manually operable device adapted toengage said ratchet wheel and turn the disk to register an opening with said orifice, spring-actuated means for engaging said ratchet wheel and turning the disk to register a solid portion thereof with said orifice, a weighing device for said re;

ceptacle, and a trip actuated by the weighing .device to release said spring means.

5. In filling apparatus, a casing having a discharge orifice, means within the casing for discharging material through said orifice,.a spout adapted to register with said orifice and discharge material into the receptacle, a disk having a series of holes therethrough adapted to register in succession with said orifice and having solid spaces between successive holes wide enough to close said orifice, a ratchet wheel attached to said disk, a manually operable device adapted to engage said ratchet wheel and turn the disk to register an opening with said orifice, spring-actuated means for engaging said ratchet wheel and turning the disk to register a solid portion thereof with said orifice, a Weighing device for said re-- ceptacle,.a trip actuated by the weighing device to release said spring means, and connections between said manually-operative means and said spring means for setting said spring means when the manuallyoperative means is actuated.

In testimony whereof I have hereunto signed my name to this specification.

IVILLIAM R. PETERSON. 

